Tong Yabghu Qaghan

Tong Yabghu Qaghan (died 628) was Qaghan of the Western Turkic Khaganate from 618 to 628, succeeding Sheguy.

Biography
Tong Yabghu Qaghan was born to the Ashina clan of the Gokturks, and he was the brother of Sheguy. He succeeded Sheguy as Khagan of the Western Turkic Khaganate in 618, and, in 627, he allied with Byzantine emperor Heraclius against the Sassanid Persians to the south. In 630, he was murdered by Kulug Sibir, his uncle, causing the collapse of the once-powerful Western Gokturks.